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Finding the Fourth Proportional to 72,554.70, 100,112.84 and 40,724.94

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Solution

The fourth proportional to 72,554.70, 100,112.84 and 40,724.94 is: 56,193.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,554.70 : 100,112.84 = 40,724.94 : x
  2. Step 2: Convert to fraction form
    72,554.70/100,112.84 = 40,724.94/x
  3. Step 3: Cross multiply
    72,554.70x = 100,112.84 × 40,724.94
  4. Step 4: Simplify right side
    72,554.70x = 4,077,089,402.23
  5. Step 5: Solve for x
    x = 4,077,089,402.23/72,554.70
  6. Step 6: Final answer
    x = 56,193.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.